If you’re self-employed and not happy with your accountant, you’re not stuck with them. Whether they’re slow to respond, too expensive, or just not the right fit anymore, switching to a new accountant is straightforward, as long as you know what to expect.
This guide shows you how to make the switch smoothly, what your new accountant will need from you, and how to avoid any surprises with HMRC.
Reasons to change your accountant
You might think accountants are all much the same, but there are big differences in service, pricing and expertise. Some are great with small business clients. Others… not so much.
Common reasons for switching include:
- Slow or patchy communication
- Fees that keep rising without explanation
- Not being proactive with tax-saving advice
- Lack of support with Making Tax Digital
- Your business has changed and you need more specialised help
If your accountant isn’t delivering what you need, it’s okay to move on.
Can you switch accountants mid-year?
Yes, you can change accountants at any time, including mid-tax year or while your Self Assessment return is being prepared. You don’t have to wait for a ‘year end’ or HMRC deadline.
That said, switching is usually easiest when:
- You’ve just filed your Self Assessment
- You haven’t yet sent your year-end paperwork
- You’re not under urgent tax deadlines
But if you are under pressure — for example, needing help with an HMRC enquiry — a good accountant should still be able to take over quickly.
What your new accountant will need from you
Once you’ve chosen a new accountant, they’ll ask for some basic documents to get started. These typically include:
- Your UTR (Unique Taxpayer Reference)
- Your National Insurance number
- Your previous accounts and tax returns
- Copies of invoices and expenses
- Access to any accounting software you use (see options)
They’ll also ask you to authorise them as your agent with HMRC so they can handle tax submissions on your behalf.
How the handover process works
Your new accountant will usually write to your old accountant to request what’s called ‘professional clearance’. This is a standard part of the process and includes handing over:
- Previous Self Assessment returns
- Details of any ongoing tax matters
- Trial balances or accounting records
As a courtesy, please notify your current accountant that you’re leaving and settle any outstanding invoices. Most will cooperate with the handover — it’s not a personal issue.
What to check before you leave
Before making the move, check your current contract or engagement letter. Are there notice periods or termination fees?
If you’re on a rolling monthly package, switching is typically a painless process. However, if you’re in a 12-month fixed-fee agreement, you may have to wait or pay to exit early.
Also ask yourself:
- Have I received everything I’ve paid for?
- Do I have copies of my tax returns?
- Do I need access to old software or bank feeds?
Don’t leave it until your new accountant starts asking for documents — download what you can now.
Choosing the right new accountant
This is your chance to upgrade. Don’t just pick the first firm that looks decent. Take time to compare options — especially those that specialise in sole traders or the self-employed.
Useful guides:
Look for signs they actually understand your situation. Do they:
- Reply promptly?
- Use plain English?
- Offer fixed fees with no surprises?
- Support FreeAgent, Xero or similar tools?
Don’t forget to tell HMRC (if needed)
If your old accountant was listed as your agent with HMRC, they may need to de-authorise themselves. Your new accountant will usually re-register as part of their onboarding process.
You don’t need to notify HMRC directly, but make sure any change is confirmed before your next return is due.
Summary: Switching should make your life easier
A good accountant should make life simpler, not more stressful. If that’s not your experience, it’s time for a change.
Choose someone who understands sole traders, charges fairly, and gives you confidence they’re on top of things.
Need help deciding who to switch to? Start by comparing these options.
From £37.50/m
From £49/m